MESON Chess Problem Database
Problem Display
PID: 11883 (4R2B/5n1B/3p4/N1pk2pR/5b2/K4b2/2Np4/6Q1 w - - 0 1)
Chlubna, Friedrich
Comm., Deutsche Schachblatter, 1973
#2
8 + 8
| 4654 | 64 + 100 | 1996 |
SOLUTION
- SOUND
- Sets
- 1...Bd1
- 2.Be4#
- 1...Bh1
- 2.Qxh1#
- 1...Be2
- 2.Be4#
- 1...Bg2
- 2.Qxg2#
- 1...Be4
- 2.Bxe4#
- 1...Bg4
- 2.Be4#
- 1...Bxh5
- 2.Be4#
- 1...Bh2
- 2.Se3#
- 1...Be3
- 2.Sxe3#
- 1...Bg3
- 2.Se3#
- 1...c4
- 2.Sb4#
- 2.Qd4#
- 1...Bd1
- Tries
- 1.Qe3?
- threat
- 2.Qd3#
- 2.Qxf3#
- 2.Qe6#
- 1...Bxh5
- 2.Be4#
- 2.Qd3#
- 2.Qe4#
- 2.Qe6#
- 1...Bxe3
- 2.Sxe3#
- 1...d1Q
- 2.Qe6#
- 1...d1B
- 2.Qd3#
- 2.Qe6#
- 1...d1R
- 2.Qxf3#
- 2.Qe6#
- 1...Bd1
- 2.Be4#
- 2.Qd3#
- 2.Qe4#
- 2.Qe6#
- 1...Bh1
- 2.Qd3#
- 2.Qe6#
- 1...Be2
- 2.Be4#
- 2.Qe4#
- 2.Qe6#
- 1...Bg2
- 2.Qd3#
- 2.Qe6#
- 1...Be4
- 2.Bxe4#
- 2.Qxe4#
- 1...Bg4
- 2.Be4#
- 2.Qd3#
- 2.Qe4#
- 1...Be5
- 2.Qxf3#
- 1...Sd8
- 2.Qd3#
- 2.Qxf3#
- 1...c4
- 2.Sb4#
- 2.Qd4#
- 1...Se5!
- threat
- 1.Qf1?
- threat
- 2.Qd3#
- 2.Qc4#
- 2.Qxf3#
- 1...Bxh5
- 2.Be4#
- 2.Qd3#
- 2.Qc4#
- 1...c4
- 2.Qxc4#
- 1...d1Q
- 2.Qc4#
- 1...d1B
- 2.Qd3#
- 2.Qc4#
- 1...d1R
- 2.Qc4#
- 2.Qxf3#
- 1...Bd1
- 2.Be4#
- 2.Qd3#
- 2.Qc4#
- 1...Bh1
- 2.Qd3#
- 2.Qc4#
- 2.Qxh1#
- 1...Be2
- 2.Be4#
- 1...Bg2
- 2.Qxg2#
- 2.Qd3#
- 2.Qc4#
- 1...Be4
- 2.Bxe4#
- 2.Qc4#
- 1...Bg4
- 2.Be4#
- 2.Qd3#
- 2.Qc4#
- 1...Be3
- 2.Sxe3#
- 2.Qc4#
- 2.Qxf3#
- 1...Be5
- 2.Qc4#
- 2.Qxf3#
- 1...Se5!
- threat
- 1.Qg4?
- threat
- 2.Qxf3#
- 2.Qe6#
- 1...Bxg4
- 2.Be4#
- 1...d1Q
- 2.Qe6#
- 1...d1B
- 2.Qe6#
- 1...Bd1
- 2.Be4#
- 2.Qe6#
- 1...Bh1
- 2.Qe6#
- 1...Be2
- 2.Be4#
- 2.Qe6#
- 1...Bg2
- 2.Qe6#
- 2.Qxg2#
- 1...Be4
- 2.Bxe4#
- 2.Qe6#
- 1...Se5
- 2.Qe6#
- 1...Sd8
- 2.Qxf3#
- 1...c4!
- threat
- 1.Qe3?
- Keys
- 1.Qxg5+!
- 1...Be5
- 2.Qxd2#
- 1...Bxg5
- 2.Se3#
- 1...Se5
- 2.Qg8#
- 1...Sxg5
- 2.Bg8#
- 1...Be5
- 1.Qxg5+!
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 10
- Sets
- B(b);N_GUARD::B(F)
- B(b);OGATEB::QAB(A),XB(b)
- B(b);N_GUARD::B(F),XB(b)
- B(b);N_GUARD,N_SPINP(f),XR(E)::B(F)
- B(c);N_GUARD::S(B)
- B(c);N_GUARD::S(B),XB(c)
- Tries
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- B(c);XQ(A)::S(B),XB(c)
- P(a);::QAB1(A)
- B(c);N_SPINP(f)::QAB(A),XB(b)
- Refutation
- S(h);N_SPINP(f)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- P(d);::QAB1(A),XP(d)
- P(a);::QAB1(A)
- B(b);N_GUARD::B(F)
- Refutation
- S(h);N_SPINP(f)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(b);N_GUARD,XQ(A)::B(F)
- P(a);::QAB1(A)
- B(b);::QAB1(A)
- S(h);N_SPINP(f)::QAB1(A)
- S(h);::QAB(A),XB(b)
- Refutation
- P(d);
- Try
- Actual
- Q(A);CHECK,XP(f)
- Vars
- B(c);OGATE,P_SPINB(c)::QAR(A),XP(a)
- B(c);P_SPINB(c),XQ(A)::S(B)
- S(h);P_SPINS(h),S_CUTB(b),S_CUTB(c),S_CUTB(c)::QAB(A)
- S(h);P_SPINS(h),S_CUTB(c),S_CUTB(c),XQ(A)::B(F)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).